4K Oculus rift

So how long do you think we will have to wait until we see a 4k VR headset?

If I am correct, I think the dev kit of the Oculus Rift is 720p? I woud say in 10 years we should have the ability to stick a 4k display into the VR headset. I think the next step would be 1080p.

Also, how cool would it be if Google Street view could be used in a VR headset? Imagine using a xbox controller moving someone around the world in VR headset using Google Street View.